【作者】 刘宇雁； 张芳； 胡盛； 陈林；

【Author】 LIU Yu-yan,ZHANG Fang,HU Sheng,CHEN Lin School of,Inner Mongol university of Science and Technology,Inner Mongolia 014010,China

【机构】 内蒙古科技大学材料冶金学院；

【摘要】 本文用Gleeble-1500D热模拟试验机,分析了20CrM0抽油杆钢的真应力-真应变曲线,对本构关系模型的准确度进行了检验,该本构模型的相关系数(R)和平均相对误差绝对值(AARE)分别为0.988和8.40%,通过建立20CrMo抽油杆钢本构方程,预测铸坯在任意变形速率、变形温度下,矫直变形过程中的应力、应变变化规律,以为连铸生产提供可靠的理论指导。更多还原

【Abstract】 In this paper,it analyzes the true stress - strain curves of 20CrMo sucker rod steel by using Gleeble-1500D thermal simulation testing machine,and examines the accuracy of the constitutive model.the correlation coefficient(R) and the average absolute relative error(AARE) of the model are 0.988 and 8.40%,respectively.According to the establishment of 20CrMo sucker rod steel constitutive equation,with different deformation rate and deformation temperature,it predicts the changing regularity of stress and strain in the straightening process,which provides reliable theoretical guidance in continuous casting production.更多还原